What the hell happened

What time is it? Sorry bout that guys.. Yes j4. The whole crew stopped by for our daily happy hour on the dock and I forgot about the post..
Gunco Bob said he will ban me if I post after 4 p.m. so I had too wait.
O.K. question?
Were putting my Bros AR together.. Progress.
- We put the gas tube on pinned upside down. Got too fix that.
- What the hell washer do you need too hold this thing together?
- Main question. How the hell do you head space this thing?
When you buy the parts separate and put it together, is the weapon normally just naturally head spaced?
What the hell do we do too test fire? Tie it too a tree with a string and pull the trigger?
Thank yall in advance for any help. 4th..

"Man needs but two things to survive alone in the woods. A blow up female doll and his trusty old AK-47" - Thomas Jefferson 1781